TurnTablism / sampling made the re-use of sections of existing recordings into a new compositional strategy. Samples became far more explicit hyper-links between one addressable piece of music and another.

With explicit addressable nodes, and a mechanism for making links, music became a blatant hyper-media.

Maybe other addressable things and links made other networks. For example, a famous musician with a recognisable sound / contribution could play on different recordings. The musician is an addressable thing. The appearance on different recordings, or membership of different bands, makes the links.